Invention Grant
US08120422B1 Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers
有权
用于斩波放大器和斩波稳压放大器的纹波降低回路
- Patent Title: Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers
- Patent Title (中): 用于斩波放大器和斩波稳压放大器的纹波降低回路
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Application No.: US12475219Application Date: 2009-05-29
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Publication No.: US08120422B1Publication Date: 2012-02-21
- Inventor: Johan Hendrik Huijsing , Kofi A. A. Makinwa , Rong Wu
- Applicant: Johan Hendrik Huijsing , Kofi A. A. Makinwa , Rong Wu
- Applicant Address: US CA Sunnyvale
- Assignee: Maxim Integrated Products, Inc.
- Current Assignee: Maxim Integrated Products, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H03F3/68
- IPC: H03F3/68

Abstract:
Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers. The ripple reduction loop includes a first chopper, a first amplifier having an input coupled to an output of the first chopper, a second chopper having an input coupled to an output of the first amplifier, a second amplifier having an input coupled to an output of the second chopper, a third chopper, an output of the second amplifier having its output capacitively coupled to an input of the third chopper as the only input to the third chopper, a third amplifier coupled as an integrator having an input coupled to an output of the third chopper, an output of the integrator being coupled to combine with the output of the first amplifier as the input of the second chopper, and at least one Miller capacitor coupled between an output of the second amplifier and the input of the second amplifier. Various embodiments are disclosed.
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